See Also: schlieren method(medicine)
schlieren(medicine)
Schlieren system(medicine)
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schlieren method (medicine)


schlieren method
<radiobiology> An optical technique that detects density gradients occuring in a fluid flow. In its simplest form, light from a slit is collimated by a lens and focused onto a knife edge by a second lens, the flow pattern is placed between the two lenses, and the resulting diffraction pattern is observed on a screen or photographic film placed behind the knife edge.